Computer Science graduate & retail store technology specialist with 5+ years supporting POS/register systems, Cisco networks & connectivity across an 890-store environment. On personal time I ship 0→1 products, internal AI tooling & security tools.
I'm a Computer Science graduate (CSI / CUNY) and a retail store technology specialist with 5+ years at Rainbow Apparel — building, deploying, and personalizing POS systems, Cisco store networks, Inseego connectivity, and peripherals across an 890-store environment, and training 10+ new IT technicians.
Outside the day job I ship 0→1 products, internal AI tooling, and security-focused tools like Asset Vault (a full-stack invoice & inventory platform) and Packet Analyzer — alongside Google Cybersecurity coursework, Security+ prep, and hands-on TryHackMe / HackTheBox labs.
The footprint I keep online every day — registers, Cisco networks, connectivity and peripherals across a nationwide retail fleet. Hover a node to inspect a storeEvery node is a real store (the footprint is real; the telemetry below is a simulation).
I deploy point-of-sale for a living — so here's one, selling the only thing in stock: me. Every item on the register is a real thing I do — store tech by day, full-stack & security builds by night. Add a few, hit checkout, and it prints your quote.
Asset Vault isn't a weekend demo — it's at v2.0.0: invoices, inventory and multi-store analytics behind one type-safe API, still evolving.
AI-assisted diagnostics I built cut troubleshooting time ~40% and overall downtime 30–40% — a store with a dead register is a store losing money.
$ security+ in progress$ thm / htb active$ wireshark · tcpdump · scapy
Trained 10+ IT technicians from zero — I document as I build.
EN · AR bilingual — NYC-based, fleet-tested, open to store-tech, full-stack & security roles.
Say hiFive years of commits, four branches — and one open pull request.
IT Technician Specialist — build, secure & support POS, Cisco networks, Inseego & peripherals fleet-wide. AI diagnostics cut troubleshooting ~40%.
Secured warehouse inventory in Oracle NetSuite — RBAC, an anti-fraud randomized barcode flow, bug-hunting with Oracle engineers.
Packet Analyzer (Scapy/Textual), Wireshark & tcpdump, Google Cybersecurity coursework, TryHackMe & HackTheBox labs.
CSI / CUNY — earned while running the fleet full-time. IEEE member; Robotics Club.
The problem. Invoicing, stock and multi-store operations usually live in three disconnected tools — totals that don't match, stock counts that drift, and no single view of the business.
What I built. A full-stack platform with end-to-end type safety — React 19 talking tRPC to a NestJS 11 API on PostgreSQL — plus Stripe subscription billing, Puppeteer-rendered PDF invoices and offline-first sync.
The result. v2.0.0 shipped, 50+ schema migrations deep — the type-safe flagship of three sibling invoicing builds (React/Express and Flutter) exploring the same product across stacks.
Seif supports store technology across approximately 890 locations and is often the first call when a store experiences an outage. I’ve seen him troubleshoot connectivity issues and get registers back online while keeping store staff informed. He understands how technical disruptions affect daily operations and approaches problems with urgency, patience, and attention to detail.
What stands out is his ability to explain technical issues clearly and stay focused on getting the store running again. When I hand him a problem, I know he’ll take ownership, keep me updated, and follow through until it’s resolved.
9 featured builds — business systems, AI tooling, security labs & games. Drag →Swipe →
Hover any tool for the receipt — where it has actually been used.Every tool below has shipped something real — tap one to visit it.
Currently exploring → Cloud / DevOps · Offensive security · Distributed systems
Every tag checked out — nothing on the shelf I can't use.
7-course Google Career Certificate — initiation, planning, execution & agile. Aug 2025.
Project-management fundamentals, life cycles & structured delivery. Jul 2025.
Algorithms, data structures & technical interview problem-solving.
Bachelor of Science from the College of Staten Island, CUNY. June 2026.
Security foundations, network security, SIEM & detection. 2024–present, in progress.
CompTIA Security+ in progress, with active hands-on security labs.
Deep-dives into the things I build and run — grounded in real code and real store floors, not theory.
Keep the store selling first — then power, peripherals, network, software. One variable at a time.
A producer/consumer capture pipeline, pluggable threat detectors, and offline PCAP analysis.
A passing badge was lying — a whole test layer had never executed. Fixing it surfaced a real production bug in Stripe webhook verification.
Got a role, a project, or store-tech work in mind? My inbox is open.
Tip: right-click anywhere for quick actions.
